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-rw-r--r--lib/msun/tests/Makefile4
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/msun/tests/Makefile b/lib/msun/tests/Makefile
index d58333271e9b..85a558bb0733 100644
--- a/lib/msun/tests/Makefile
+++ b/lib/msun/tests/Makefile
@@ -19,6 +19,10 @@ CFLAGS+= -I${TESTSRC:H}/libc/gen
CFLAGS+= -D__HAVE_LONG_DOUBLE
.endif
+# Avoid builtins, to force the compiler to emit calls to the libm
+# functions, and not calculate any results in advance.
+CFLAGS+= -fno-builtin
+
NETBSD_ATF_TESTS_C= acos_test
NETBSD_ATF_TESTS_C+= asin_test
NETBSD_ATF_TESTS_C+= atan_test